A road is a long, flat, hard place that vehicles like cars and trucks drive on. Roads connect towns and cities to one another. Roads can be thousands of kilometers long, and be made of hard asphalt, concrete, or just dirt.
A sidewalk, also called a footpath or sometimes a pavement, is a place for people to walk. Sidewalks are usually a thin strip of concrete between people's houses or shops and the road. Cars are not allowed to drive on the sidewalk.